Simple answer- slow em down.
I'd probably be looking to try and counter with heavy shots and low kicks, ultimately though play to your strengths, if you're good at clinching for example drag them there!

You might be better posting this in the stand up technique subforum btw.

-Don't play his game, don't try to be faster.
-If he moves a lot, don't chase him, unless you have very good footwork and you are able to corner him.
-Watch for the feints, usually they like to use them lot.
-Be patient, you will get hit but try no to be frustrated. Usually they will slow down in the later rounds. (and you can help it with some lows and liver shots)
-Counter hard.
-Clinch the fak out of him.
-They usually engage from a bigger distance, meaning they will have to close the gap with a step in. Learn to see it and to react to it, not to the strike coming after.